[jira] [Assigned] (YARN-4606) Sometimes Fairness inconjuncttions with UserLimitPercent and UserLimitFactor in queue leads to situation where it appears that applications in queue are getting starved or stuck

["Wangda Tan (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/YARN-4606?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Wangda Tan reassigned YARN-4606:
--------------------------------

    Assignee: Wangda Tan

> Sometimes Fairness inconjuncttions with UserLimitPercent and UserLimitFactor in queue leads to situation where it appears that applications in queue are getting starved or stuck
> ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: YARN-4606
>                 URL: https://issues.apache.org/jira/browse/YARN-4606
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: capacity scheduler, capacityscheduler
>    Affects Versions: 2.8.0, 2.7.1
>            Reporter: Karam Singh
>            Assignee: Wangda Tan
>
> Encountered while studying behaviour fairness with UserLimitPercent and UserLimitFactor during following test:
> Ran GridMix with Queue settings: Capacity=10, MaxCap=80, UserLimit=25 UserLimitFactor=32, FairOrderingPolicy only. Encountered a application starving situation where 33 application (190 apps completed out of 761 apps, queue can 345 containers) are running with total of 45 containers running, and that 12 extra only one app(the app was having around 18000 tasks) , all other apps were having AM running only no other containers were given any apps. After that app finished, there were 32 AMs that kept running without any containers for task being launched
> GridMix was run with following settings:
> gridmix.client.pending.queue.depth=10, gridmix.job-submission.policy=REPLAY, gridmix.client.submit.threads=5, gridmix.submit.multiplier=0.0001, gridmix.job.type=SLEEPJOB, mapreduce.framework.name=yarn, mapreduce.job.queuename=hive1, mapred.job.queue.name=hive1, gridmix.sleep.max-map-time=5000, gridmix.sleep.max-reduce-time=5000, gridmix.user.resolve.class=org.apache.hadoop.mapred.gridmix.RoundRobinUserResolver With Users file containing 4 users for RoundRobinUserResolver



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